@article{Makkonen_2015,
title={Scientific collaboration between ‘old’ and ‘new’ member states: Did joining the European Union make a difference?},
volume={106},
ISSN={1588-2861},
url={http://dx.doi.org/10.1007/s11192-015-1824-y},
DOI={10.1007/s11192-015-1824-y},
number={3},
journal={Scientometrics},
publisher={Springer Science and Business Media LLC},
author={Makkonen,
Teemu and Mitze,
Timo},
year={2015},
month=dec,
pages={1193–1215} }